The highlight of day 3 for me was the session on Achieving Maximum Scale with Database.com Persistence Options. This turned into a deep dive on the Salesforce database architecture and confirmed (not that I doubted it for a moment) that there are some seriously smart people working for SFDC. Definitely worth checking out the recording/slide deck once available. Unfortunately I couldn't make the Eric Schmidt closing keynote as we were entertaining that night.
It all seems a long time ago now that we are setting up for Cloudforce London. Even worse, it's a whole year to the next Dreamforce rather than the usual 9 months.